Magnetic gear tooth sensor IC targets traction motors

November 19, 2019 //By Julien Happich
sensor IC
Allegro MicroSystems’ ATS17501 is what the company claims to be the industry’s first gear tooth sensor IC designed to provide incremental position for electric vehicle traction motors operating up to 30k RPM.

The device addresses engineers’ most pressing traction motor challenges- including vibration at startup and running mode, high rotational speed, mechanical space constraints, high operating temperatures, and ISO 26262 safety requirements. The sensor is capable of high speed switching up to 40kHz for 30k RPM operation, it comes with advanced algorithms to suppress undesired output pulses at startup and running mode. The patented integrated magnet package reduces design complexity and enables overall smaller motors, for operation at temperatures up to 160°C. The ATS17501 incorporates real-time diagnostics to achieve an ASIL-B(D) rating as a safety element out of context.

Allegro MicroSystems - www.allegromicro.com


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